18 | English 2 609 141 098 • 19.7.13
The replacement plug should have the same fuse
rating as the original plug.
The severed plug must be disposed of to avoid a
possible shock hazard and should never be insert-
ed into a mains socket elsewhere.
Product Description and
Specifications
Intended Use
The measuring tool is intended for measuring dis-
tances, lengths, heights, clearances, grades and
for the calculation of areas and volumes. The
measuring tool is suitable for measuring indoors
and outdoors.
Technical Data
Product Features
The numbering of the product features shown re-
fers to the illustration of the measuring tool on the
graphic page.
1 Display
2 Measuring button
3 Button for grade measurement / calibration **
4 Button for function mode / basic settings **
5 Minus button
Digital Laser Rangefinder BLM 80
Article number 183844
Distance measurement
Measuring range (typical) 0.05–80 m
A)
Measuring range (typical un-
der unfavourable conditions) 45 m
B)
Measuring accuracy (typical) ± 1.5 mm
A)
Measuring accuracy
(typical under unfavourable
conditions)
± 2.5 mm
B)
Lowest indication unit 0.1 mm
Indirect Distance Measure-
ment and Vial
Measuring range –60°–+60°
Grade measurement
Measuring range 0°–360° (4x90°)
C)
Measuring accuracy (typical) ± 0.2°
D)F)
Lowest indication unit 0.1°
General
Operating temperature –10 °C...+50 °C
E)
Storage temperature –20 °C...+50 °C
Allowable charging
temperature range
+5 °C...+40 °C
Relative air humidity, max. 90 %
Laser class 2
Laser type 635 nm, <1 mW
Laser beam diameter
(at 25
°C) approx.
– at 10 m distance
– at 80 m distance
6mm
48 mm
Setting accuracy of the laser
to the housing, approx.
–Vertical
–Horizontal
± 2 mm/m
F)
± 10 mm/m
F)
Automatic switch-off after
approx.
–Laser
– Measuring tool
(without measurement)
20 s
5min
Weight according to
EPTA-Procedure 01/2003 0.14 kg
Dimensions 51 x 111 x 30 mm
Degree of protection IP 54 (dust and
splash water pro-
tected)
Battery Li-Ion
Rated voltage 3.7 V
Capacity 1.25 Ah
Number of battery cells 1
Single measurements per
battery charge, approx.
25000
G)
Battery Charger
Article number 2 609 120 4..
Charging time approx. 3 h
Output voltage 5.0 V
Charging current 500 mA
Protection class /II
A) For measurements from the rear measuring-tool edge,
100 % reflectance of the target (e.g., a white-painted wall),
weak backlight and 25 °C operating temperature. Addi-
tionally, a deviation influence of ± 0.05 mm/m must be tak-
en into account.
B) For measurements from the rear measuring-tool edge,
10 – 100 % reflectance of the target, strong backlight and
– 10 °C to +50 °C operating temperature. Additionally, a
deviation influence of ± 0.29 mm/m must be taken into ac-
count.
C) For measurements with the rear side of the unit as refer-
ence, the max. measuring range is ± 60°
D) After calibration at 0 ° and 90 ° with an additional grade
error of ± 0.01 °/degree to 45 ° (max.).
E) In the continuous measurement function, the maximum
operating temperature is +40 °C.
F) at 25 °C
G) For a new and charged battery without display illumina-
tion and tone signal.
The measuring tool can be clearly identified with the serial
number 18 on the type plate.
Digital Laser Rangefinder BLM 80
OBJ_BUCH-1839-002.book Page 18 Friday, July 19, 2013 8:46 AM
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